Review worksheet for Evaluating Reports 3_12 with answers.pdf

Evaluating survey questions we are conducting a

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Evaluating survey questions We are conducting a survey about gambling among people aged 18 to 30 in New Zealand. One of the questions in the written questionnaire is as follows: Do you consider that horse-racing is gambling and therefore jockeys are not really sportspeople? Yes No No opinion
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This worksheet is provided by Dr Nicola Ward Petty and Dr Shane Dye of Statistics Learning Centre. Copying without acknowledgement of the source violates copyright. Many more exercises like these, with immediate feedback are available by joining NZ Stats 3 at statslc.com Page 2 9. Which of the following BEST describes the question. A. The question has more than one idea in it. B. The question could be confusing because it is worded in the negative. C. The question is "leading" in that it is not stated in a neutral way. D. The alternative responses are not well-defined. E. This is a good question for this context. Experiments and Observational studies 10. When you collect data from processes that are already taking place, this can be classified as an experiment. True/False 11. You randomly assign half a class to eat a Weetbix with milk and the other half to eat a Weetbix without milk and you time them. This is an example of an experiment. True/False 12. In an experiment exploring the effect of free stickers on the sales of choconutties it was thought that the weather may also affect sales. This is called a lurking variable. True/False 13. We wish to see how well basketball players know the rules of the game. We take two teams and give the players a test on the rules, out of ten questions. Then we compare the median scores of the two teams. Which of the following best describes the scenario above? A. This is an observational study. B. This is a well-designed experiment involving randomisation.
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